D3 Publisher has announced their Mecha filled third-person shooter Custom Mech Wars will launch digitally for PlayStation 5 and PC via Steam on December 14th, 2023. There are many different digital editions of the game releasing, and a physical release for the PlayStation 5 in Japan.

here are the details of the contents for each of the digital editions:

Standard Edition ($49.99)
Custom Mech Wars base game
Earth Defense Force Collaboration Edition ($64.99)
Custom Mech Wars base game
Earth Defense Force Collaboration Mech Parts: Barga set
Earth Defense Force Collaboration Mech Parts: Balam set
Earth Defense Force Collaboration Mech Parts: Nix set
Earth Defense Force Collaboration Mech Parts: Combat Wagon set
Earth Defense Force Collaboration Mech Parts: EMC set
Earth Defense Force Collaboration Accessories Parts: EDF emblem set
Additional missions (10 missions)

Ultimate Edition ($74.99)
Custom Mech Wars base game
Earth Defense Force Collaboration Mech Parts: Barga set
Earth Defense Force Collaboration Mech Parts: Balam set
Earth Defense Force Collaboration Mech Parts: Nix set
Earth Defense Force Collaboration Mech Parts: Combat Wagon set
Earth Defense Force Collaboration Mech Parts: EMC set
Earth Defense Force Collaboration Accessories Parts: EDF emblem set
Additional missions (10 missions)
Samurai Maiden Collaboration Accessories Parts (seven heroine camouflages, seven decals)
Bullet Girls Collaboration Accessories Parts (eight heroine camouflages, eight decals)
Omega Labyrinth Collaboration Accessories Parts (seven heroine camouflages, seven decals)
Dream C Club Collaboration Accessories Parts (13 heroine camouflages, 13 decals)
Custom Voice: Enthusiastic AI (VA. Nobuyuki Hiyama)
Custom Voice: Young Lady AI (VA. Kikuko Inoue)
Custom Voice: Rich Lady AI (VA. Hekiru Shiina)
Custom Voice: Berserker AI (VA. Tomoko Kaneda)
The following early purchase and pre-order bonuses will be available for all editions:

Early Purchase Bonus
Head Parts: Girl Head
Included as a purchase bonus until January 13, 2024.
Pre-Order Bonus
72 hours early access
Leg Parts: Itasha BG
Leg Parts: Itasha OL
Leg Parts: Itasha DCC

Here is more about Custom Mech Wars from the Steam page:

Take customization to the extreme with the Omega Customization System and battle with one-of-a-kind combat units in this all-new third-person shooter mecha game.

• Build one-of-a-kind mechs using the Omega Customization System!
Not being restricted to bipedal builds, you can freely customize your mechs to include multiple heads, legs, and arms in whatever positions and angles you choose. Depending on the parts you use, the parameters will vary wildly, so you can build mechs with whatever abilities and fighting styles you wish!

• Battle with Omega Customized mechs in this thrilling third-person action shooter!
Arm your custom mech to the teeth with every weapon imaginable and blast your way through oncoming enemies. Experience the heart-pounding mecha action that only your Omega Customized units can provide. Destroy enemy units, collect their parts, and customize your favorite mechs even more. Complete a variety of missions as you battle, customize, and then battle and customize some more!

• Join forces with other players online in the competition between Omega Customized mechs!
This game supports online multiplayer. Up to four players can cooperate to complete story missions just like in single-player mode. Not only can you experience the rush of tackling missions with friends, but you can show off your favorite mechs you personally customized.